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    Fuel pump- dead?

    Story -- Bike has been sitting all winter. I wanted to do that under tank mod with the fuel pump and had the whole sub frame off. I decided to see if the pump would run directly off the battery. It ran a couple of seconds then quit. Now it just seems to short out . Did i just fry my fuel pump? or could it just be the 18 years of use?

    I did this with a car pump before with no issues. Has anybody here tried this?

    Probably order a new one unless someone has an extra one to sell?
    Does that vacum fuel pump work on a street set-up? size?

    did i ask enough questions

    #2
    I've got an xj600 mechanical fuel pump in the shed that looks like it'll work - the flow rate seems good anyway - haven't had the opportunity to try it on the Hawk yet ...
    It's small, looks like the sv ones other's have used anyway. Snowmobiles look like a good source as well.
    '95 ShaftHawk 650P>
    Front: Bros Mk2 front wheel; Mk1 forks; MetalGear disc; NC30 caliper; cb1 yoke.
    Breathing: Hacked up and shortened ART tri-can on collector and link pipe from DemonTweeks.
    Other: RGV bars; DefT dash; modded subframe; modded rearsets; relocated ignition.

    '91 Bros 650 Mk1>
    Currently off the road.

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      #3
      Sounds like it might be gone to me, but if you want to run another test, there is one on page 258 of the manual. Pretty simple. Just need a small wire to short the fuel pump relay.

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        #4
        Mr. Gasket has a universal pump that works well. It was $35 at the local auto parts store.
        BIKES: Honda: RC31 Racebike/ NT650 Streetbike, DUCATI: None at the moment.
        Former MSF Rider Coach / Trackday Instructor/ Expert Roadracer #116
        "I'd rather ride a slow bike fast than a fast bike slow."

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          #5
          I just said this in another thread but since it happened to me recently I'll say it here- check your fuses! I don't know exactly how you ran the pump off the battery but if it was still connected into the wiring at all it is possible you blew the fuse. I thought I had a bad tail light bulb but when I checked it was good. Then I checked the fuses and the tail light/ instrument cluster/ plate light fuse was bad. I replaced it with the same size 10 amp fuse and everything worked for awhile, then the fuse blew again. I did an educated guess and hypothesized that my plate light put the amp load above 10, so I switched to a 15 amp fuse and so far no problems.
          '88 Hawk GT
          '89 Harley FXSTC
          2008 Yamaha V-Star 1300 tourer

          http://www.hawkgtforum.com/viewtopic.php?t=948

          "...my performance ain't perfect, but its loud, and its fast..." -Widespread Panic

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            #6
            This link is for the Honda AT but is a similar pump:-
            http://www.xrv.org.uk/media/fuelpumpXRV750.pdf
            "Life may begin at 40, but it doesn't get real interesting until about 150."

            • '88 in Candy Flair Blue + '90 in Italian Red
            • Ohlins Rear Shock
            • F2 front wheel
            • VFR750 rear wheel
            • Hiperform seat&headers
            • MSMotorsport Seat Cowl
            • Steve Lenac Tokico six pot caliper

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              #7
              Originally Posted by motorcycleman
              I just said this in another thread but since it happened to me recently I'll say it here- check your fuses! I don't know exactly how you ran the pump off the battery but if it was still connected into the wiring at all it is possible you blew the fuse. I thought I had a bad tail light bulb but when I checked it was good. Then I checked the fuses and the tail light/ instrument cluster/ plate light fuse was bad. I replaced it with the same size 10 amp fuse and everything worked for awhile, then the fuse blew again. I did an educated guess and hypothesized that my plate light put the amp load above 10, so I switched to a 15 amp fuse and so far no problems.

              heres another good tip.


              did you know.... that red fuel pump connector can plug into your rear brake switch connector?

              and if it does.... thats a direct short to ground on the fuse.


              i learned that one the hard way. lol.

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